Java G2TextMeasurer类代码示例

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Returns the preferred width of the title.  This will only be called when the title
 * is being drawn at the left or right of a chart.
 *
 * @param g2  the graphics device.
 * @param height  the height.
 *
 * @return The preferred width of the title.
 */
public float getPreferredWidth(Graphics2D g2, float height) {
    float result = 0.0f;
    if (this.text != null && !this.text.equals("")) {
        g2.setFont(this.font);
        TextBlock title = TextUtilities.createTextBlock(
            this.text, this.font, this.paint, height, new G2TextMeasurer(g2)
        );
        Size2D d = title.calculateDimensions(g2);
        result = (float) getSpacer().getAdjustedWidth(d.getHeight());
                                                 // use height here because the title
                                                 // is displayed rotated
    }
    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Title preferred width = " + result);   
    }
    return result;
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Returns the preferred height of the title.
 *
 * @param g2  the graphics device.
 * @param width  the width.
 *
 * @return The preferred height of the title.
 */
public float getPreferredHeight(Graphics2D g2, float width) {
    float result = 0.0f;
    if (this.text != null && !this.text.equals("")) {
        g2.setFont(this.font);
        float textWidth = (float) getSpacer().trimWidth(width);
        TextBlock title = TextUtilities.createTextBlock(
            this.text, this.font, this.paint, textWidth, new G2TextMeasurer(g2)
        );
        Size2D d = title.calculateDimensions(g2);
        result = (float) getSpacer().getAdjustedHeight(d.getHeight());
    }
    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Title preferred height = " + result);   
    }
    return result;
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
     * Draws a message to state that there is no data to plot.
     *
     * @param g2  the graphics device.
     * @param area  the area within which the plot should be drawn.
     */
    protected void drawNoDataMessage(Graphics2D g2, Rectangle2D area) {

        Shape savedClip = g2.getClip();
        g2.clip(area);
        String message = this.noDataMessage;
        if (message != null) {
            g2.setFont(this.noDataMessageFont);
            g2.setPaint(this.noDataMessagePaint);
//            FontMetrics fm = g2.getFontMetrics(this.noDataMessageFont);
//            Rectangle2D bounds = TextUtilities.getTextBounds(message, g2, fm);
//            float x = (float) (area.getX() + area.getWidth() / 2 - bounds.getWidth() / 2);
//            float y = (float) (area.getMinY() + (area.getHeight() / 2) - (bounds.getHeight() / 2));
//            g2.drawString(message, x, y);
            TextBlock block = TextUtilities.createTextBlock(
                this.noDataMessage, this.noDataMessageFont, this.noDataMessagePaint, 
                0.9f * (float) area.getWidth(), new G2TextMeasurer(g2)
            );
            block.draw(
                g2, (float) area.getCenterX(), (float) area.getCenterY(), TextBlockAnchor.CENTER
            );
        }
        g2.setClip(savedClip);

    }
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Draws a message to state that there is no data to plot.
 *
 * @param g2  the graphics device.
 * @param area  the area within which the plot should be drawn.
 */
protected void drawNoDataMessage(Graphics2D g2, Rectangle2D area) {
    Shape savedClip = g2.getClip();
    g2.clip(area);
    String message = this.noDataMessage;
    if (message != null) {
        g2.setFont(this.noDataMessageFont);
        g2.setPaint(this.noDataMessagePaint);
        TextBlock block = TextUtilities.createTextBlock(
                this.noDataMessage, this.noDataMessageFont, 
                this.noDataMessagePaint, 0.9f * (float) area.getWidth(), 
                new G2TextMeasurer(g2));
        block.draw(g2, (float) area.getCenterX(), (float) area.getCenterY(), 
                TextBlockAnchor.CENTER);
    }
    g2.setClip(savedClip);
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Draws a message to state that there is no data to plot.
 *
 * @param g2  the graphics device.
 * @param area  the area within which the plot should be drawn.
 */
protected void drawNoDataMessage(Graphics2D g2, Rectangle2D area) {
    Shape savedClip = g2.getClip();
    g2.clip(area);
    String message = this.noDataMessage;
    if (message != null) {
        g2.setFont(this.noDataMessageFont);
        g2.setPaint(this.noDataMessagePaint);
        TextBlock block = TextUtilities.createTextBlock(
                this.noDataMessage, this.noDataMessageFont,
                this.noDataMessagePaint, 0.9f * (float) area.getWidth(),
                new G2TextMeasurer(g2));
        block.draw(g2, (float) area.getCenterX(),
                (float) area.getCenterY(), TextBlockAnchor.CENTER);
    }
    g2.setClip(savedClip);
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Paints the panel.
 *
 * @param g  the graphics device.
 */
public void paintComponent(final Graphics g) {

    super.paintComponent(g);
    final Graphics2D g2 = (Graphics2D) g;

    final Dimension size = getSize();
    final Insets insets = getInsets();
    final Rectangle2D available = new Rectangle2D.Double(insets.left, insets.top,
                                  size.getWidth() - insets.left - insets.right,
                                  size.getHeight() - insets.top - insets.bottom);

    final double x = available.getX();
    final double y = available.getY();
    final float width = (float) available.getWidth();
    final TextBlock block = TextUtilities.createTextBlock(
        this.text, this.font, Color.black, width, new G2TextMeasurer(g2)
    );
    g2.setPaint(Color.black);
    block.draw(g2, (float) x, (float) y, TextBlockAnchor.TOP_LEFT, 0.0f, 0.0f, 0.0);

}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Draws the left labels.
 * 
 * @param leftKeys  the keys.
 * @param g2  the graphics device.
 * @param plotArea  the plot area.
 * @param linkArea  the link area.
 * @param maxLabelWidth  the maximum label width.
 * @param state  the state.
 */
protected void drawLeftLabels(KeyedValues leftKeys, Graphics2D g2, 
                              Rectangle2D plotArea, Rectangle2D linkArea, 
                              float maxLabelWidth, PiePlotState state) {
    
    PieLabelDistributor distributor1 = new PieLabelDistributor(
        leftKeys.getItemCount()
    );
    double lGap = plotArea.getWidth() * this.labelGap;
    double verticalLinkRadius = state.getLinkArea().getHeight() / 2.0;
    for (int i = 0; i < leftKeys.getItemCount(); i++) {   
        String label = this.labelGenerator.generateSectionLabel(
                this.dataset, leftKeys.getKey(i));
        if (label != null) {
            TextBlock block = TextUtilities.createTextBlock(label, 
                    this.labelFont, this.labelPaint, maxLabelWidth, 
                    new G2TextMeasurer(g2));
            TextBox labelBox = new TextBox(block);
            labelBox.setBackgroundPaint(this.labelBackgroundPaint);
            labelBox.setOutlinePaint(this.labelOutlinePaint);
            labelBox.setOutlineStroke(this.labelOutlineStroke);
            labelBox.setShadowPaint(this.labelShadowPaint);
            double theta = Math.toRadians(
                    leftKeys.getValue(i).doubleValue());
            double baseY = state.getPieCenterY() - Math.sin(theta) 
                           * verticalLinkRadius;
            double hh = labelBox.getHeight(g2);

            distributor1.addPieLabelRecord(new PieLabelRecord(
                    leftKeys.getKey(i), theta, baseY, labelBox, hh,
                    lGap / 2.0 + lGap / 2.0 * -Math.cos(theta), 0.9 
                    + getExplodePercent(this.dataset.getIndex(
                            leftKeys.getKey(i)))));
        }
    }
    distributor1.distributeLabels(plotArea.getMinY(), plotArea.getHeight());
    for (int i = 0; i < distributor1.getItemCount(); i++) {
        drawLeftLabel(g2, state, distributor1.getPieLabelRecord(i));
    }
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Draws a the title horizontally within the specified area.  This method will be called
 * from the {@link #draw(Graphics2D, Rectangle2D) draw} method.
 * 
 * @param g2  the graphics device.
 * @param area  the area for the title.
 */
protected void drawHorizontal(Graphics2D g2, Rectangle2D area) {
    Rectangle2D titleArea = (Rectangle2D) area.clone();
    getSpacer().trim(titleArea);
    g2.setFont(this.font);
    g2.setPaint(this.paint);
    TextBlock title = TextUtilities.createTextBlock(
        this.text, this.font, this.paint, (float) titleArea.getWidth(), new G2TextMeasurer(g2)
    );
    TextBlockAnchor anchor = null;
    float x = 0.0f;
    HorizontalAlignment horizontalAlignment = getHorizontalAlignment();
    if (horizontalAlignment == HorizontalAlignment.LEFT) {
        x = (float) titleArea.getX();
        anchor = TextBlockAnchor.TOP_LEFT;
    }
    else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
        x = (float) titleArea.getMaxX();
        anchor = TextBlockAnchor.TOP_RIGHT;
    }
    else if (horizontalAlignment == HorizontalAlignment.CENTER) {
        x = (float) titleArea.getCenterX();
        anchor = TextBlockAnchor.TOP_CENTER;
    }
    float y = 0.0f;
    RectangleEdge position = getPosition();
    if (position == RectangleEdge.TOP) {
        y = (float) titleArea.getY();
    }
    else if (position == RectangleEdge.BOTTOM) {
        y = (float) titleArea.getMaxY();
        if (horizontalAlignment == HorizontalAlignment.LEFT) {
            anchor = TextBlockAnchor.BOTTOM_LEFT;
        }
        else if (horizontalAlignment == HorizontalAlignment.CENTER) {
            anchor = TextBlockAnchor.BOTTOM_CENTER;
        }
        else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
            anchor = TextBlockAnchor.BOTTOM_RIGHT;
        }
    }
    title.draw(g2, x, y, anchor);
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Draws a the title vertically within the specified area.  This method will be called
 * from the {@link #draw(Graphics2D, Rectangle2D) draw} method.
 * 
 * @param g2  the graphics device.
 * @param area  the area for the title.
 */
protected void drawVertical(Graphics2D g2, Rectangle2D area) {
    Rectangle2D titleArea = (Rectangle2D) area.clone();
    getSpacer().trim(titleArea);
    g2.setFont(this.font);
    g2.setPaint(this.paint);
    TextBlock title = TextUtilities.createTextBlock(
        this.text, this.font, this.paint, (float) titleArea.getHeight(), new G2TextMeasurer(g2)
    );
    TextBlockAnchor anchor = null;
    float y = 0.0f;
    VerticalAlignment verticalAlignment = getVerticalAlignment();
    if (verticalAlignment == VerticalAlignment.TOP) {
        y = (float) titleArea.getY();
        anchor = TextBlockAnchor.TOP_RIGHT;
    }
    else if (verticalAlignment == VerticalAlignment.BOTTOM) {
        y = (float) titleArea.getMaxY();
        anchor = TextBlockAnchor.TOP_LEFT;
    }
    else if (verticalAlignment == VerticalAlignment.CENTER) {
        y = (float) titleArea.getCenterY();
        anchor = TextBlockAnchor.TOP_CENTER;
    }
    float x = 0.0f;
    RectangleEdge position = getPosition();
    if (position == RectangleEdge.LEFT) {
        x = (float) titleArea.getX();
    }
    else if (position == RectangleEdge.RIGHT) {
        x = (float) titleArea.getMaxX();
        if (verticalAlignment == VerticalAlignment.TOP) {
            anchor = TextBlockAnchor.BOTTOM_RIGHT;
        }
        else if (verticalAlignment == VerticalAlignment.CENTER) {
            anchor = TextBlockAnchor.BOTTOM_CENTER;
        }
        else if (verticalAlignment == VerticalAlignment.BOTTOM) {
            anchor = TextBlockAnchor.BOTTOM_LEFT;
        }
    }
    title.draw(g2, x, y, anchor, x, y, -Math.PI / 2.0);
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Draws the left labels.
 * 
 * @param leftKeys  the keys.
 * @param g2  the graphics device.
 * @param plotArea  the plot area.
 * @param linkArea  the link area.
 * @param maxLabelWidth  the maximum label width.
 * @param state  the state.
 */
protected void drawLeftLabels(KeyedValues leftKeys, Graphics2D g2, 
                              Rectangle2D plotArea, Rectangle2D linkArea, 
                              float maxLabelWidth, PiePlotState state) {
    
    PieLabelDistributor distributor1 = new PieLabelDistributor(leftKeys.getItemCount());
    double lGap = plotArea.getWidth() * this.labelGap;
    double verticalLinkRadius = state.getLinkArea().getHeight() / 2.0;
    for (int i = 0; i < leftKeys.getItemCount(); i++) {   
        String label = this.labelGenerator.generateSectionLabel(
            this.dataset, leftKeys.getKey(i)
        );
        if (label != null) {
            TextBlock block = TextUtilities.createTextBlock(
                label, 
                this.labelFont, this.labelPaint, maxLabelWidth, new G2TextMeasurer(g2)
            );
            TextBox labelBox = new TextBox(block);
            labelBox.setBackgroundPaint(this.labelBackgroundPaint);
            labelBox.setOutlinePaint(this.labelOutlinePaint);
            labelBox.setOutlineStroke(this.labelOutlineStroke);
            labelBox.setShadowPaint(this.labelShadowPaint);
            double theta = Math.toRadians(leftKeys.getValue(i).doubleValue());
            double baseY = state.getPieCenterY() - Math.sin(theta) * verticalLinkRadius;
            double hh = labelBox.getHeight(g2);
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug("Label height = " + hh);   
            }

            distributor1.addPieLabelRecord(
                new PieLabelRecord(
                    leftKeys.getKey(i), theta, baseY, labelBox, hh,
                    lGap / 2.0 + lGap / 2.0 * -Math.cos(theta), 
                    0.9 + getExplodePercent(this.dataset.getIndex(leftKeys.getKey(i)))
                )
            );
        }
    }
    distributor1.distributeLabels(plotArea.getMinY(), plotArea.getHeight());
    for (int i = 0; i < distributor1.getItemCount(); i++) {
        drawLeftLabel(g2, state, distributor1.getPieLabelRecord(i));
    }
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Draws the right labels.
 * 
 * @param keys  the keys.
 * @param g2  the graphics device.
 * @param plotArea  the plot area.
 * @param linkArea  the link area.
 * @param maxLabelWidth  the maximum label width.
 * @param state  the state.
 */
protected void drawRightLabels(KeyedValues keys, Graphics2D g2, 
                               Rectangle2D plotArea, Rectangle2D linkArea, 
                               float maxLabelWidth, PiePlotState state) {

    // draw the right labels...
    PieLabelDistributor distributor2 = new PieLabelDistributor(keys.getItemCount());
    double lGap = plotArea.getWidth() * this.labelGap;
    double verticalLinkRadius = state.getLinkArea().getHeight() / 2.0;

    for (int i = 0; i < keys.getItemCount(); i++) {
        String label = this.labelGenerator.generateSectionLabel(
            this.dataset, keys.getKey(i)
        );

        if (label != null) {
            TextBlock block = TextUtilities.createTextBlock(
                label, this.labelFont, this.labelPaint, 
                maxLabelWidth, new G2TextMeasurer(g2)
            );
            TextBox labelBox = new TextBox(block);
            labelBox.setBackgroundPaint(this.labelBackgroundPaint);
            labelBox.setOutlinePaint(this.labelOutlinePaint);
            labelBox.setOutlineStroke(this.labelOutlineStroke);
            labelBox.setShadowPaint(this.labelShadowPaint);
            double theta = Math.toRadians(keys.getValue(i).doubleValue());
            double baseY = state.getPieCenterY() 
                          - Math.sin(theta) * verticalLinkRadius;
            double hh = labelBox.getHeight(g2);
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug("Label height = " + hh);   
            }
            distributor2.addPieLabelRecord(
                new PieLabelRecord(
                    keys.getKey(i), theta, baseY, labelBox, hh,
                    lGap / 2.0 + lGap / 2.0 * Math.cos(theta), 
                    0.9 + getExplodePercent(this.dataset.getIndex(keys.getKey(i)))
                )
            );
        }
    }
    distributor2.distributeLabels(linkArea.getMinY(), linkArea.getHeight());
    for (int i = 0; i < distributor2.getItemCount(); i++) {
        drawRightLabel(g2, state, distributor2.getPieLabelRecord(i));
    }

}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Draws the right labels.
 * 
 * @param keys  the keys.
 * @param g2  the graphics device.
 * @param plotArea  the plot area.
 * @param linkArea  the link area.
 * @param maxLabelWidth  the maximum label width.
 * @param state  the state.
 */
protected void drawRightLabels(KeyedValues keys, Graphics2D g2, 
                               Rectangle2D plotArea, Rectangle2D linkArea, 
                               float maxLabelWidth, PiePlotState state) {

    // draw the right labels...
    PieLabelDistributor distributor2 
        = new PieLabelDistributor(keys.getItemCount());
    double lGap = plotArea.getWidth() * this.labelGap;
    double verticalLinkRadius = state.getLinkArea().getHeight() / 2.0;

    for (int i = 0; i < keys.getItemCount(); i++) {
        String label = this.labelGenerator.generateSectionLabel(
                this.dataset, keys.getKey(i));

        if (label != null) {
            TextBlock block = TextUtilities.createTextBlock(label, 
                    this.labelFont, this.labelPaint, maxLabelWidth, 
                    new G2TextMeasurer(g2));
            TextBox labelBox = new TextBox(block);
            labelBox.setBackgroundPaint(this.labelBackgroundPaint);
            labelBox.setOutlinePaint(this.labelOutlinePaint);
            labelBox.setOutlineStroke(this.labelOutlineStroke);
            labelBox.setShadowPaint(this.labelShadowPaint);
            double theta = Math.toRadians(keys.getValue(i).doubleValue());
            double baseY = state.getPieCenterY() 
                          - Math.sin(theta) * verticalLinkRadius;
            double hh = labelBox.getHeight(g2);
            distributor2.addPieLabelRecord(new PieLabelRecord(
                    keys.getKey(i), theta, baseY, labelBox, hh,
                    lGap / 2.0 + lGap / 2.0 * Math.cos(theta), 
                    0.9 + getExplodePercent(this.dataset.getIndex(
                            keys.getKey(i)))));
        }
    }
    distributor2.distributeLabels(plotArea.getMinY(), plotArea.getHeight());
    for (int i = 0; i < distributor2.getItemCount(); i++) {
        drawRightLabel(g2, state, distributor2.getPieLabelRecord(i));
    }

}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Creates a label.
 *
 * @param category  the category.
 * @param width  the available width. 
 * @param edge  the edge on which the axis appears.
 * @param g2  the graphics device.
 *
 * @return a label.
 */
protected TextBlock createLabel(Comparable category, float width, 
                                RectangleEdge edge, Graphics2D g2) {
    TextBlock label = TextUtilities.createTextBlock(
        category.toString(), getTickLabelFont(), getTickLabelPaint(), 
        width, this.maxCategoryLabelLines, new G2TextMeasurer(g2)
    );  
    return label; 
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Creates a label.
 *
 * @param category  the category.
 * @param width  the available width. 
 * @param edge  the edge on which the axis appears.
 * @param g2  the graphics device.
 *
 * @return A label.
 */
protected TextBlock createLabel(Comparable category, float width, 
                                RectangleEdge edge, Graphics2D g2) {
    TextBlock label = TextUtilities.createTextBlock(category.toString(), 
            getTickLabelFont(category), getTickLabelPaint(category), width,
            this.maximumCategoryLabelLines, new G2TextMeasurer(g2));  
    return label; 
}
 

import org.jfree.text.G2TextMeasurer; //导入依赖的package包/类
/**
 * Creates a label.
 *
 * @param category  the category.
 * @param width  the available width.
 * @param edge  the edge on which the axis appears.
 * @param g2  the graphics device.
 *
 * @return A label.
 */
protected TextBlock createLabel(Comparable category, float width,
        RectangleEdge edge, Graphics2D g2) {
    TextBlock label = TextUtilities.createTextBlock(category.toString(),
            getTickLabelFont(category), getTickLabelPaint(category), width,
            this.maximumCategoryLabelLines, new G2TextMeasurer(g2));
    return label;
}